Effect of the connection structure of zirconia dental implants on biomechanical properties

IF 3.3 2区医学 Q2 ENGINEERING, BIOMEDICAL

Journal of the Mechanical Behavior of Biomedical Materials Pub Date : 2024-11-04 DOI:10.1016/j.jmbbm.2024.106800

Fei Sun , Libing Xu , Jianmin Han , Hai Xu , Xinchang Li , Zeng Lin

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引用次数: 0

Abstract

The connection structure of zirconia dental implants significantly influences their biomechanical behavior and plays a crucial role in the overall service performance of the implant system. This study aims to compare the stress distribution of zirconia implants featuring various internal connection structures under different working conditions. Four distinct types of connection structures were designed for zirconia dental implants: triangular, quadrilateral, hexagonal, and hexalobular plus connections. Additionally, the finite element method was employed to analyze these structures under three working conditions: a static load test model, a bone level model, and a torsion model. Results indicated that in the static load test model, the hexagonal structure experienced the highest stress value at 1284.9 MPa due to its thin neck wall, whereas the hexalobular plus connected implant exhibited the lowest stress value at 1252.9 MPa. In the bone level model, the triangular connection structure demonstrated poor stress distribution for cortical bone and cancellous bone at 69.606 MPa and 7.8191 MPa, respectively. Conversely, the hexalobular plus connection yielded superior stress results for cortical bone and cancellous bone, with values of 66.24 MPa and 5.1327 MPa, respectively. In the torsion model, the hexalobular plus-connected implant exhibits the highest stress value at 237.6 MPa, while maintaining the smallest force transmission angle. Therefore, given that the abutment necessitates a greater range of installation angles and improved torque transmission, the hexalobular plus connection structure may represent the optimal choice.

查看原文本刊更多论文

氧化锆牙科植入物的连接结构对生物力学特性的影响。

氧化锆牙科种植体的连接结构会对其生物力学行为产生重大影响，并对种植体系统的整体使用性能起着至关重要的作用。本研究旨在比较具有不同内部连接结构的氧化锆种植体在不同工作条件下的应力分布。研究人员为氧化锆种植体设计了四种不同类型的连接结构：三角形连接、四边形连接、六边形连接和六方加连接。此外，还采用有限元法分析了这些结构在三种工作条件下的情况：静态负载测试模型、骨水平模型和扭转模型。结果表明，在静载荷测试模型中，六角形结构由于颈壁较薄，应力值最高，为 1284.9 兆帕，而六叶形加连接种植体的应力值最低，为 1252.9 兆帕。在骨水平模型中，三角形连接结构对皮质骨和松质骨的应力分布较差，分别为 69.606 兆帕和 7.8191 兆帕。相反，六叶形加连接结构对皮质骨和松质骨的应力结果较好，分别为 66.24 兆帕和 5.1327 兆帕。在扭转模型中，六叶加连接种植体的应力值最高，达到 237.6 兆帕，同时保持最小的力传递角。因此，鉴于基台需要更大的安装角度范围和更好的扭矩传递，六叶加连接结构可能是最佳选择。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of the Mechanical Behavior of Biomedical Materials 工程技术-材料科学：生物材料

CiteScore

7.20

自引率

7.70%

发文量

505

审稿时长

46 days

期刊介绍： The Journal of the Mechanical Behavior of Biomedical Materials is concerned with the mechanical deformation, damage and failure under applied forces, of biological material (at the tissue, cellular and molecular levels) and of biomaterials, i.e. those materials which are designed to mimic or replace biological materials. The primary focus of the journal is the synthesis of materials science, biology, and medical and dental science. Reports of fundamental scientific investigations are welcome, as are articles concerned with the practical application of materials in medical devices. Both experimental and theoretical work is of interest; theoretical papers will normally include comparison of predictions with experimental data, though we recognize that this may not always be appropriate. The journal also publishes technical notes concerned with emerging experimental or theoretical techniques, letters to the editor and, by invitation, review articles and papers describing existing techniques for the benefit of an interdisciplinary readership.